Car headrest fan

Abstract

To provide an in-vehicle headrest fan that has the effect of waking up a driver. [Solution] The vehicle headrest fan 10 includes a housing 1, a fan assembly 2, and a fixing part 3. The housing includes an air inlet 11 and an air outlet 12. The fan assembly is provided inside the housing. The fan assembly is used to direct airflow from the air inlet into the housing and then out through the air outlet. The fixing part is provided on the outside of the housing. The fixing part is used to connect to a headrest rod of a vehicle seat, and the vehicle headrest fan is attached between the headrest of the vehicle seat and the backrest of the vehicle seat.

Description

[Technical Field]

[0001] The present invention relates to the technical field of vehicle headrest fans, and more particularly to vehicle headrest fans. [Background technology]

[0002] With the continuous development of automotive technology, consumer interest in in-vehicle comfort features is also increasing day by day. Currently, new automobiles and new energy vehicles may have seat fans installed to improve comfort for the driver and passengers. However, traditional automobiles or older models do not have such features. Especially during hot summer months, when driving or riding for long periods of time, lowering the air conditioning temperature throughout the vehicle increases fuel consumption or reduces the cruising range of new energy vehicles. On the other hand, raising the air conditioning temperature can cause discomfort to the driver and passengers. Furthermore, long-term driving can cause driver fatigue, so an effective means of waking the driver up is needed to ensure driving safety.

[0003] Therefore, there is a need for a better solution for older cars or traditional fuel-powered vehicles, which can individually dissipate heat to each seat without lowering the air conditioning temperature of the entire vehicle, and when installed in the driver's seat, can have the effect of waking the driver up. Summary of the Invention [Problem to be solved by the invention]

[0004] To overcome the shortcomings of the prior art, the present invention provides a car headrest fan. [Means for solving the problem]

[0005] The technical means adopted by the present invention to solve the technical problems are as follows:

[0006] The vehicle headrest fan according to the present invention includes a housing, a fan assembly, and a fixing part. The housing includes an air inlet and an air outlet, the fan assembly is provided inside the housing, and the fan assembly is used to cause airflow to flow into the housing from the air inlet and out through the air outlet; The fixing portion is provided on the outside of the housing, and the fixing portion is used to connect to a headrest rod of a vehicle seat, thereby mounting the vehicle headrest fan between the headrest of the vehicle seat and the backrest of the vehicle seat. [Effects of the Invention]

[0007] The present invention has the following beneficial effects. According to the present invention, a vehicle headrest fan is provided. The vehicle headrest fan is connected to the headrest rod of a vehicle seat via a fixing part, allowing the fan to be stably installed between the headrest and the seat back, and is highly adaptable. This meets the need to provide individual heat dissipation functions for each seat in older vehicles or traditional fuel-powered vehicles. Furthermore, the fan assembly is disposed inside the housing, drawing in air through an inlet and blowing it in a specific direction through an outlet, thereby effectively blowing air to the target occupant for heat dissipation and improving riding comfort. [Brief explanation of the drawings]

[0008] In order to more clearly describe the technical aspects of the embodiments of the present invention or the prior art, the following briefly describes the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some examples of the present invention, and those skilled in the art can obtain other drawings based on the structures shown in these drawings without paying creative labor.

[0009] [Figure 1] 1 is a schematic diagram of the overall structure of the first embodiment of the present invention; [Figure 2] FIG. 1 is an exploded view of the first embodiment of the present invention. [Figure 3]1 is a structural diagram of a position limiting plate according to a first embodiment of the present invention; [Figure 4] FIG. 2 is a structural diagram of another embodiment of the present invention. [Figure 5] 1 is a view showing the state in which the vehicle headrest fan of the present invention is attached to the headrest and backrest of a vehicle seat; [Figure 6] FIG. 2 is a schematic diagram of the overall structure of the second embodiment of the present invention. [Figure 7] FIG. 10 is an exploded view of a second embodiment of the present invention. [Figure 8] FIG. 10 is another exploded view of the second embodiment of the present invention. [Figure 9] FIG. 10 is a left side view of a second embodiment of the present invention. [Figure 10] FIG. 10 is yet another exploded view of the second embodiment of the present invention. [Figure 11] FIG. 10 is yet another exploded view of the second embodiment of the present invention. [Figure 12] 10 is a schematic diagram of yet another overall structure of the second embodiment of the present invention; FIG. [Figure 13] 10 is a cross-sectional view along a retractable data cable module according to a second embodiment of the present invention. [Figure 14] FIG. 2 is a circuit block diagram of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0010] The following clearly and completely describes the embodiments of the present invention in conjunction with the drawings. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments that can be obtained by those skilled in the art without any creative work are all within the scope of protection of the present invention. [Example]

[0011] Example 1 1 and 2, the vehicle headrest fan includes a housing 1, a fan assembly 2, and a fixing part 3. The fan assembly 2 is provided inside the housing 1. The housing 1 has an air inlet 11 and an air outlet 12. The fan assembly 2 is configured to cause airflow to flow into the housing 1 from the air inlet 11 and out through the air outlet 12. The fixing part 3 is provided on the outside of the housing 1. In this embodiment, the fixing parts 3 are provided on both sides of the housing 1 and are used to connect and fix to headrest rods of a vehicle seat. In this way, the vehicle headrest fan according to the present invention is attached between the headrest and the backrest of the vehicle seat.

[0012] In this embodiment, air inlets 11 are provided on both the top and bottom surfaces of the housing 1. Air outlets 12 are provided on the side surfaces of the housing 1. The fan assembly 2 includes at least two centrifugal fans. The fan assembly 2 causes airflow to flow into the housing 1 from both the top and bottom surfaces, and then the air is blown out from the air outlets 12 on the side surfaces of the housing 1. The air outlets 12 are provided with movable blades 4, which are used to adjust the direction of the airflow from the air outlets 12.

[0013] In addition, in this technical solution, the vehicle headrest fan can be fixed to the headrest rod using the fixing part 3. The fixing part 3 has a flexible band-like structure and can be a band-like hook-and-loop fastener, an elastic fixing ring or band made of silicone or rubber material, etc., but is not particularly limited in this embodiment. Its main effect is to facilitate fixing and removal.

[0014] In another embodiment, the fixing part 3 can be a C-shaped locking clip made of plastic material or integrally molded with the housing 1. The car headrest fan is fixed to the headrest rod by fitting it into the opening groove of the C-shaped locking clip.

[0015] 2 and 3. More specifically, in this embodiment, a position limiting plate 13 is further provided on the surface of the housing 1 on which the air inlet 11 is provided. The position limiting plate 13 is primarily used to prevent the air inlet 11 from being blocked when the headrest of the vehicle seat is pushed downward, or to prevent the backrest of the vehicle seat from blocking the air inlet 11. In this embodiment, the surface of the position limiting plate 13 is formed higher than the surface of the housing 1 on which the air inlet 11 is provided, thereby forming a gap between the position limiting plate 13 and the surface of the housing 1 on which the air inlet 11 is provided. When attaching the position limiting plate 13, a connecting seat 14 is provided on the air inlet 11, and a connecting locking portion 15 is provided on the inner surface of the position limiting plate 13. The connecting seat 14 and the connecting locking portion 15 are correspondingly arranged, thereby allowing the position limiting plate 13 to be fixed above the air inlet 11 and maintaining a certain distance from the air inlet 11.

[0016] See Figure 4. In another embodiment, height limiting blocks 16 may be provided on the surface of the housing 1 where the air inlet 11 is provided, or may be provided around the air inlet 11, similarly achieving the purpose of preventing the air inlet 11 from being blocked by the headrest.

[0017] More specifically, the vehicle headrest fan further includes a power module, a control module, and a Bluetooth module. The power module is electrically connected to the control module. The fan assembly and the Bluetooth module are signal-connected to the control module. The Bluetooth module can be connected to a mobile device or a vehicle host, and the mobile device or the vehicle host can control the start, stop, and airflow of the vehicle headrest fan.

[0018] When installing the vehicle headrest fan of this embodiment, there is no need to completely remove the headrest from the vehicle seat. Simply raise the headrest to expose the headrest rod, connect the fixing part to the headrest rod, and then push the headrest downward to return it to its normal position. This not only makes installation and removal easier, but also improves the riding experience for the driver or passenger. [Example]

[0019] Example 2 5 to 14, the vehicle headrest fan 10 includes a housing 1, a fan assembly 2, and a fixing part 3. The housing 1 includes an air inlet 11 and an air outlet 12. The fan assembly 2 is provided inside the housing 1. The fan assembly 2 is used to direct airflow from the air inlet 11 into the housing 1 and then out through the air outlet 12. The fixing part 3 is provided on the outside of the housing 1. The fixing part 3 is used to connect to a headrest rod 20 of a vehicle seat, thereby mounting the vehicle headrest fan 10 between a headrest 30 and a backrest 40 of the vehicle seat.

[0020] With the above-mentioned configuration, the vehicle headrest fan 10 can be stably attached between the headrest 30 and the seat back 40 by connecting the fixing part 3 to the headrest rod 20 of the vehicle seat, and has excellent compatibility. It can meet the need to provide individual heat dissipation functions for each seat in older models or traditional fuel-powered vehicles. In addition, the fan assembly 2 is installed inside the housing 1 and draws in air through the intake port 11 and blows it in a specific direction through the outlet port 12, effectively blowing air to the target occupant and dissipating heat, improving riding comfort.

[0021] In this embodiment, the length of the housing 1 ranges from 1 cm to 40 cm, the width of the housing 1 ranges from 1 cm to 25 cm, and the height of the housing 1 ranges from 1 cm to 15 cm. Preferably, the length of the housing 1 is 19 cm, the width is 12 cm, and the height is 5 cm.

[0022] In this embodiment, the fixing part 3 has a fixing space 31. The size of the fixing space 31 is adjustable. With the above configuration, the size of the fixing space 31 of the fixing part 3 can be adjusted, which allows the vehicle headrest fan 10 to be adapted to different vehicle models and headrest rods 20 with different diameters or intervals, thereby improving versatility.

[0023] In this embodiment, the fixing portion 3 is a flexible band-like structure. In other embodiments, the fixing portion 3 can be an elastic fixing ring or band.

[0024] In this embodiment, the housing 1 includes a left end 111 and a right end 112 that are opposite to each other. The fixed part 3 includes a first lock assembly 32. The first lock assembly 32 has a first lock space 321. The first lock assembly 32 is provided at the left end 111. The size of the first lock space 321 is adjustable. The first lock assembly 32 further includes a first lock member 322 and a first lock engagement member 323. The first lock member 322 and the first lock engagement member 323 are detachably engaged with each other to form the first lock space 321. Specifically, the first lock member 322 includes a hook surface of a first hook-and-loop fastener, and the first lock engagement member 323 includes a loop surface of the first hook-and-loop fastener. The hook surface of the first hook-and-loop fastener and the loop surface of the first hook-and-loop fastener are detachably coupled with each other to enclose and form the first lock space 321, the size of which is adjustable. Alternatively, the first locking member 322 includes a loop surface of the first hook fastener, and the first locking engagement member 323 includes a hook surface of the first hook fastener, and the hook surface of the first hook fastener and the loop surface of the first hook fastener are detachably connected, thereby enclosing and forming a first locking space 321 whose size can be adjusted.

[0025] The fixed part 3 further includes a second lock assembly 33. The second lock assembly 33 is provided on the right end part 112. The second lock assembly 33 has a second lock space 331. The size of the second lock space 331 is adjustable. The second lock assembly 33 includes a second lock member 332 and a second lock engagement member 333. The second lock member 332 and the second lock engagement member 333 are engaged with each other to form the second lock space 331. The second lock member 332 includes a hook surface of a second hook-and-loop fastener, and the second lock engagement member 333 includes a loop surface of the second hook-and-loop fastener. The hook surface of the second hook-and-loop fastener and the loop surface of the second hook-and-loop fastener are detachably coupled with each other, thereby enclosing and forming the second lock space 331, the size of which is adjustable. Alternatively, the second locking member 332 includes a loop surface of the second hook-and-loop fastener, and the second locking engagement member 333 includes a hook surface of the second hook-and-loop fastener, and the hook surface of the second hook-and-loop fastener and the loop surface of the second hook-and-loop fastener are detachably connected, thereby enclosing and forming a second locking space 331 whose size can be adjusted.

[0026] With the above-described configuration, the left and right sides of the housing 1 are provided with a first locking space 321 and a second locking space 331, each of which is adjustable in size, and each locking space is surrounded by a detachable engagement between the hook surface and the loop surface of a hook-and-loop fastener. The adjustable and reusable hook-and-loop fastener structure allows the fixing portion 3 to be flexibly adjusted according to the spacing, diameter, or arrangement of the headrest rods 20 of different vehicle models, thereby enhancing the compatibility and adaptability of the vehicle-mounted headrest fan 10 to various vehicles. At the same time, the detachable connection by the hook-and-loop fastener not only simplifies the process of installing and removing the locking assembly, but also ensures a secure lock, maintaining a stable and tight fit even when the vehicle is moving or traveling on bumpy roads.

[0027] Furthermore, the length of the first locking member 322 is in the range of 1 cm to 10 cm, and the width of the first locking member 322 is in the range of 0.5 cm to 5 cm. The length of the first locking engagement member 323 is in the range of 1 cm to 10 cm, and the width of the first locking engagement member 323 is in the range of 0.5 cm to 5 cm. Preferably, the length of the first locking member 322 is 4.5 cm, and the width is 2 cm. The length of the first locking engagement member 323 is 4.5 cm, and the width is 2 cm.

[0028] The length of the second locking member 332 is in the range of 1 cm to 10 cm, and the width of the second locking member 332 is in the range of 0.5 cm to 5 cm. The length of the second locking engagement member 333 is in the range of 1 cm to 10 cm, and the width of the second locking engagement member 333 is in the range of 0.5 cm to 5 cm. Preferably, the length of the second locking member 332 is 4.5 cm, and the width is 2 cm. The length of the second locking engagement member 333 is 4.5 cm, and the width is 2 cm.

[0029] With the above configuration, the car headrest fan 10 can be flexibly adjusted according to the spacing, diameter or arrangement of the headrest rods 20 of different car models by using hook-and-loop fasteners with appropriate dimensions, thereby improving compatibility.

[0030] In this embodiment, the vehicle headrest fan 10 further includes an upper position limiting plate 5. The air inlet 11 includes an upper air inlet 1101. The housing 1 has an upper end 113 and a lower end 114 that are provided opposite each other. The upper air inlet 1101 is provided at the upper end 113. The upper position limiting plate 5 is provided above the upper air inlet 1101. The upper surface of the upper position limiting plate 5 is higher than the surface of the housing 1 on which the upper air inlet 1101 is provided, thereby forming an upper air inlet gap 51 between the bottom surface of the upper position limiting plate 5 and the surface of the housing 1 on which the upper air inlet 1101 is provided. Furthermore, the housing 1 has a front end 115 and a rear end 116 that are provided opposite each other. The air outlet 12 is provided at the front end 115. The height of the upper suction gap 51 gradually decreases from the rear end 116 to the front end 115. With the above-described configuration, by providing the upper position limiting plate 5 above the upper suction port 1101, the upper suction gap 51 is formed between the upper position limiting plate 5 and the surface of the housing 1 on which the upper suction port 1101 is provided, providing a stable suction flow path for air. This allows a sufficient amount of intake air to be maintained and prevents insufficient intake due to obstruction of the upper surface. Furthermore, by gradually decreasing the height of the upper suction gap 51 from the rear end 116 to the front end 115 of the housing 1, the upper position limiting plate 5 forms a structure similar to a flow guide slope, effectively guiding air from the rear to the front to the upper suction port 1101, optimizing the airflow direction and improving intake efficiency.

[0031] Of these, the ratio of the area of ​​the upper air inlet to the area of ​​upper end 113 ranges from 50% to 90%. Preferably, the ratio of the area of ​​the upper air inlet to the area of ​​upper end 113 is 75%. With the above configuration, the area ratio between the upper air inlet and upper end 113 of housing 1 is set within an appropriate range, thereby improving intake efficiency.

[0032] The height of the upper suction gap 51 ranges from 0.3 cm to 2 cm. Preferably, the height of the upper suction gap 51 is 0.8 cm. With the above configuration, the height of the upper suction gap 51 is set within an appropriate range, thereby improving the intake efficiency. Furthermore, the larger the upper suction gap 51, the better the air blowing effect.

[0033] Furthermore, a plurality of protruding first stop ribs 52 are provided on the bottom surface of the upper position limiting plate 5. The plurality of first stop ribs 52 are arranged on the side adjacent to the rear end 116 of the upper position limiting plate 5. With the above-described configuration, the first stop ribs 52 form a multi-stage blocking structure within the upper suction gap 51, which not only effectively blocks debris, hair, etc. from the seat back direction, but also prevents small children's fingers from entering the housing 1, ensuring safety. At the same time, the stop ribs form an orderly flow guide gap within the suction flow path, which allows air to flow more smoothly and uniformly between the ribs and improves intake efficiency.

[0034] In this embodiment, the vehicle headrest fan 10 further includes a lower position limiting plate 6. The air inlet 11 includes a lower air inlet 1102. The housing 1 has an upper end 113 and a lower end 114 that are provided opposite each other. The lower air inlet 1102 is provided at the lower end 114. The lower position limiting plate 6 is provided below the lower air inlet 1102. The lower surface of the lower position limiting plate 6 is lower than the lower surface of the housing 1 where the lower air inlet 1102 is provided, thereby forming a lower air inlet gap 61 between the top surface of the lower position limiting plate 6 and the surface of the housing 1 where the lower air inlet 1102 is provided. The housing 1 has a front end 115 and a rear end 116 that are provided opposite each other. The air outlet 12 is provided at the front end 115. The height of the lower suction gap 61 gradually decreases from the rear end 116 toward the front end 115. Furthermore, a plurality of protruding second stop ribs 62 are provided on the top surface of the lower position limiting plate 6. The housing 1 has a front end 115 and a rear end 116 that are provided opposite each other. The air outlet 12 is provided at the front end 115. The plurality of second stop ribs 62 are arranged on the side of the lower position limiting plate 6 that is close to the rear end 116. The height of the lower suction gap 61 ranges from 0.3 cm to 2 cm. Preferably, the height of the lower suction gap 61 is 0.8 cm. With the above-described configuration, the upper suction port 1101 and the lower suction port 1102 are provided at the upper end 113 and the lower end 114 of the housing 1, respectively, and the upper position limiting plate 5 and the lower position limiting plate 6 are arranged at corresponding positions, thereby achieving a more stable and efficient dual-system intake structure.

[0035] In this embodiment, the air outlet 12 is equipped with a movable blade 4 that can swing up and down. The movable blade 4 is used to adjust the direction of the air being blown out. The swing angle range of the movable blade 4 is 20°. With the above configuration, by providing the movable blade 4 that can swing up and down on the air outlet 12, the user can adjust the air direction according to their actual needs, thereby ensuring that the airflow is blown more accurately to the occupants, improving the comfort of use. The swing angle range of the movable blade 4 is 20°, which not only ensures a sufficient range for adjusting the air direction, but also maintains the stability of the air volume, improving the overall user experience.

[0036] In this embodiment, the fan assembly 2 includes a centrifugal fan 21. The centrifugal fan 21 is disposed facing the air outlet 12. The diameter of the centrifugal fan 21 ranges from 5 cm to 10 cm. Preferably, the diameter of the centrifugal fan 21 is 7 cm. With this configuration, the drawn air can be intensively guided to the air outlet 12, achieving a more efficient air blowing effect. The centrifugal fan 21 has a higher wind pressure output capacity under the same volume conditions, and can deliver air stably and quickly to the position of the occupant, making it particularly suitable for use in a small space such as a vehicle headrest 30.

[0037] In this embodiment, the vehicle headrest fan 10 further includes a power supply module 7 and a control module 8. The power supply module 7, the control module 8, and the fan assembly 2 are all electrically connected. The housing 1 is further provided with a power supply input terminal 71. The power supply input terminal 71 is electrically connected to the power supply module 7. The power supply input terminal 71 is selectively electrically connected to an on-board power supply or an external power supply and is used to supply power to the vehicle headrest fan 10. With the above configuration, the vehicle headrest fan 10 is compatible with multiple power supply methods by providing the power supply module 7 and the control module 8 and arranging the power supply input terminal 71 on the housing 1, which can be selectively connected to the on-board power supply or the external power supply. In addition to being able to use the vehicle headrest fan 10 by connecting it to an on-board power supply while the vehicle is moving, it can also be used continuously via an external power supply outdoors, improving flexibility and continuity of use.

[0038] In this embodiment, a telescopic data cable module 9 is further provided inside the housing 1. The telescopic data cable module 9 is electrically connected to the power supply module 7 and the control module 8. The telescopic data cable module 9 includes a telescopic data cable 91. The telescopic data cable 91 has a data cable connector 911. A first through-hole 17 is formed in the housing 1. The telescopic data cable 91 passes through the first through-hole 17 and is at least partially exposed to the outside of the housing 1. The telescopic data cable 91 is detachably electrically connected to an external device and is used to transmit power between the vehicle headrest fan 10 and the external device. The diameter of the first through-hole 17 is smaller than the outer diameter of the data cable connector 911, thereby preventing the telescopic data cable 91 from completely retracting inside the housing 1. The length of the telescopic data cable 91 is in a range of 10 cm to 300 cm. Preferably, the length of the telescopic data cable 91 is 150 cm.

[0039] With the above configuration, the user can extend or retract the data cable connector 911 to connect to an external device, achieving power transmission between the in-vehicle headrest fan 10 and the external device. This allows power to be supplied to the electronic devices of passengers in the vehicle, and the in-vehicle headrest fan 10 also functions as a mobile battery, improving its multi-functionality. The diameter of the first through-hole 17 is smaller than the outer diameter of the data cable connector 911, preventing the data cable from completely retracting inside the housing 1 and ensuring ease of removal and operation when using the data cable. Furthermore, an extendable data cable within this length range can be used in most situations, improving the convenience of product use.

[0040] In this embodiment, a mounting cover 92 is provided inside the housing 1. The mounting cover 92 is provided with a rotation shaft 921. The telescopic data cable module 9 further includes a cable reel 93. The cable reel 93 is rotatably fitted onto the rotation shaft 921. The telescopic data cable 91 is wound around the cable reel 93. A return member 94 is further provided between the cable reel 93 and the mounting cover 92. After the telescopic data cable 91 has been pulled out, the return member 94 is used to rotate the cable reel 93 in the opposite direction to retrieve the telescopic data cable 91 into the cable reel 93. The housing 1 has an upper end 113 and a lower end 114 provided opposite to each other. The upper end 113 has a first relief protrusion 18 that protrudes outward and corresponds to the mounting cover 92. The first relief protrusion 18 has a first relief space 181. The lower end 114 has a second relief protrusion 19 that protrudes outward and corresponds to the mounting cover 92. The second relief protrusion 19 has a second relief space 191. The first relief space 181 and the second relief space 191 together surround and form a relief cavity 95. The mounting cover 92 is provided within the relief cavity 95. The outer wall of the housing 1 is further formed with a receiving groove 171 that communicates with the first through-hole 17. The data cable connector 911 can be received and locked within the receiving groove 171. The first relief protrusion 18 abuts against the inner wall of the upper position limiting plate 5, and the second relief protrusion 19 is in close contact with the inner wall of the lower position limiting plate 6.

[0041] With the above-described configuration, a mounting cover 92 is provided inside the housing 1, and a rotatable cable reel 93 is disposed thereon, allowing the retractable data cable 91 to be wound and stored. After the user has pulled out the data cable for use, the cable reel 93 automatically rotates in the reverse direction under the action of a return member 94, thereby retracting the data cable into the cable reel 93, thereby achieving an automatic retraction function. Furthermore, a first relief protrusion 18 and a second relief protrusion 19 are provided at the upper end 113 and the lower end 114 of the housing 1, respectively, to form a first relief space 181 and a second relief space 191 corresponding to the mounting cover 92, which together surround the relief cavity 95. This ensures that the cable reel 93 and its return structure can operate normally within the cavity without being obstructed by the inner wall of the housing 1, and also makes the structural layout of the housing 1 more rational and compact, thereby reducing the volume of the housing 1. At the same time, a storage groove 171 communicating with the first through-hole 17 is provided on the outside of the housing 1, and the data cable connector 911 can be stored and locked in the storage groove 171, preventing the data cable connector 911 from sagging and further improving the neatness and safety of the overall structure.

[0042] In this embodiment, the housing 1 includes a left end 111 and a right end 112 that are provided opposite each other. The housing 1 further includes a first fastening portion 110 located at the left end 111 and a second fastening portion 120 located at the right end 112. The first fastening portion 110 and the second fastening portion 120 are both provided at one end close to the air outlet 12. When the fixing portion 3 is connected to the headrest rod 20 of the vehicle seat, the first fastening portion 110 and the second fastening portion 120 come into close contact with the front end of the headrest rod 20 of the vehicle seat. Specifically, the first fastening portion 110 is cylindrical, and the second fastening portion 120 is also cylindrical. The vehicle headrest fan 10 further includes a switch button 81. The switch button 81 is electrically connected to the power supply module 7 and the control module 8. The switch button 81 is provided on the outer wall of the first stopper portion 110 or the outer wall of the second stopper portion 120.

[0043] With the above configuration, the first and second fastening portions 110 and 120 are provided on the left and right ends 111 and 112 of the housing 1, respectively, near the air outlet 12. When the fixing portion 3 is connected to the headrest rod 20 of the vehicle seat, the fastening portions come into close contact with the front end of the headrest rod 20, thereby fixing the position of the air outlet 12 to the front side of the headrest 30 and the seat back. This effectively ensures the accuracy of the airflow direction from the air outlet 12. Furthermore, by locating the switch button 81 on the outer wall of the first or second fastening portion 110 or 120, the user can easily press the switch button 81 to turn the fan on or off, and the design is both beautiful and smooth.

[0044] It should be noted that all directional indications (e.g., up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to describe the relative positional relationships and movement situations between components in a specific posture (as shown in the drawings). When the posture changes, the directional indications also change accordingly.

[0045] Furthermore, the terms "first" and "second" used in the present invention are used only to distinguish between components and are not to be understood as indicating or implying their relative importance or the quantity of the designated components. Therefore, the elements defined as "first" and "second" may explicitly or implicitly include at least one element. Furthermore, the term "and / or" in the entire sentence includes three schemes, taking A and / or B as examples: proposal A, proposal B, and a proposal that simultaneously satisfies both A and B. Proposals may be combined with each other, but this must be based on what a person skilled in the art can achieve. If a combination of proposals contradicts or is not feasible, the combination of technical proposals should be considered nonexistent and not within the scope of protection sought by the present invention.

[0046] The above is merely a preferred embodiment of the present invention and does not limit the scope of the patent claims. Any equivalent structural transformations made using the contents of the specification and drawings based on the concept of the present invention, or those directly or indirectly used in other related technical fields, are also within the scope of protection of the present invention.

Claims

1. An in-vehicle headrest fan, The device includes a housing (1), a fan assembly (2), a fixing part (3), a power supply module (7), a control module (8), and a retractable data cable module (9), The housing (1) includes an inlet (11) and an outlet (12), The fan assembly (2) is provided inside the housing (1), and the fan assembly (2) is used to make airflow flow from the intake port (11) into the housing (1) and out through the exhaust port (12); the fixing portion (3) is provided on the outside of the housing (1), and the fixing portion (3) is used to connect with a headrest rod (20) of a vehicle seat, thereby attaching the vehicle-mounted headrest fan between a headrest (30) of the vehicle seat and a backrest (40) of the vehicle seat; The power supply module (7), the control module (8), and the fan assembly (2) are all electrically connected to each other; the telescopic data cable module (9) is electrically connected to the power supply module (7) and the control module (8), the telescopic data cable module (9) includes a telescopic data cable (91), the telescopic data cable (91) has a data cable connector (911), the housing (1) has a first through-hole (17), the telescopic data cable (91) passes through the first through-hole (17) and at least a portion of the telescopic data cable (91) is exposed to the outside of the housing (1), the telescopic data cable (91) is detachably electrically connected to an external device and is used to realize power transmission between the vehicle headrest fan and the external device.

2. 2. The vehicle headrest fan according to claim 1, wherein the housing (1) is further provided with a power input terminal (71), the power input terminal (71) is electrically connected to the power supply module (7), the power input terminal (71) is selectively electrically connected to an on-vehicle power supply or an external power supply, and is used to supply power to the vehicle headrest fan; the diameter of the first through hole (17) is smaller than the outer diameter of the data cable connector (911), thereby preventing the telescopic data cable (91) from being completely contracted inside the housing (1); and the length of the telescopic data cable (91) is in a range of 10 cm to 300 cm.

3. 2. The vehicle headrest fan according to claim 1, wherein the fixing portion (3) has a fixing space (31), the size of the fixing space (31) is adjustable, and the fixing portion (3) is a flexible band-shaped structure.

4. 2. The vehicle headrest fan according to claim 1, wherein the housing (1) includes a left end (111) and a right end (112) provided opposite to each other, the fixing part (3) includes a first lock assembly (32), the first lock assembly (32) has a first lock space (321), the first lock assembly (32) is provided at the left end (111), the size of the first lock space (321) is adjustable, the first lock assembly (32) includes a first lock member (322) and a first lock engagement member (323), and the first lock member (322) and the first lock engagement member (323) are detachably engaged with each other to form the first lock space (321).

5. The first locking member (322) includes a hook surface of a first surface fastener, and the first lock engaging member (323) includes a loop surface of the first surface fastener, and the hook surface of the first surface fastener and the loop surface of the first surface fastener are detachably connected to each other, thereby surrounding and forming the first locking space (321) whose size is adjustable; Alternatively, the first locking member (322) includes a loop surface of a first surface fastener, the first lock engaging member (323) includes a hook surface of the first surface fastener, and the hook surface of the first surface fastener and the loop surface of the first surface fastener are detachably connected to each other, thereby surrounding and forming the first locking space (321) whose size is adjustable; 5. The vehicle headrest fan according to claim 4, wherein the length of the first locking member (322) is in a range of 1 cm to 10 cm, the width of the first locking member (322) is in a range of 0.5 cm to 5 cm, the length of the first lock engagement member (323) is in a range of 1 cm to 10 cm, and the width of the first lock engagement member (323) is in a range of 0.5 cm to 5 cm.

6. The fixed part (3) further includes a second lock assembly (33), the second lock assembly (33) is provided at the right end part (112), the second lock assembly (33) has a second lock space (331), the size of the second lock space (331) is adjustable, the second lock assembly (33) includes a second lock member (332) and a second lock engagement member (333), the second lock member (332) and the second lock engagement member (333) are engaged with each other to form the second lock space (331), The second locking member (332) includes a hook surface of a second surface fastener, and the second lock engaging member (333) includes a loop surface of a second surface fastener, and the hook surface of the second surface fastener and the loop surface of the second surface fastener are detachably connected to each other, thereby surrounding and forming the second locking space (331) whose size is adjustable. Alternatively, the second locking member (332) includes a loop surface of a second surface fastener, the second lock engaging member (333) includes a hook surface of a second surface fastener, and the hook surface of the second surface fastener and the loop surface of the second surface fastener are detachably connected to each other, thereby surrounding and forming the second locking space (331) whose size is adjustable, 5. The vehicle headrest fan according to claim 4, wherein the length of the second locking member (332) is in a range of 1 cm to 10 cm, the width of the second locking member (332) is in a range of 0.5 cm to 5 cm, the length of the second lock engagement member (333) is in a range of 1 cm to 10 cm, and the width of the second lock engagement member (333) is in a range of 0.5 cm to 5 cm.

7. The vehicle headrest fan further includes an upper position limiting plate (5), the air inlet (11) includes an upper air inlet (1101), the housing (1) has an upper end (113) and a lower end (114) that are provided opposite to each other, the upper air inlet (1101) is provided at the upper end (113), the upper position limiting plate (5) is provided above the upper air inlet (1101), and the upper position limiting plate (5) is provided above the upper air inlet (1101). The upper surface of the plate (5) is higher than the surface of the housing (1) on which the upper suction port (1101) is provided, thereby forming an upper suction gap (51) between the bottom surface of the upper position limiting plate (5) and the surface of the housing (1) on which the upper suction port (1101) is provided, and the ratio of the area of ​​the upper suction port (1101) to the area of ​​the upper end (113) is in the range of 50% to 90%, and the housing (1) is 2. The vehicle headrest fan according to claim 1, wherein the upper position limiting plate has a bottom surface provided with a plurality of protruding first stop ribs, the first stop ribs being disposed on a side of the upper position limiting plate that is adjacent to the rear end.

3. The vehicle headrest fan according to claim 1, wherein the upper position limiting plate has a bottom surface provided with a plurality of protruding first stop ribs, the first stop ribs being disposed on a side of the upper position limiting plate that is adjacent to the rear end.

8. The vehicle headrest fan further includes a lower position limiting plate (6), the air inlet (11) includes a lower air inlet (1102), the housing (1) has an upper end (113) and a lower end (114) that are opposite to each other, the lower air inlet (1102) is provided at the lower end (114), the lower position limiting plate (6) is provided below the lower air inlet (1102), and the lower surface of the lower position limiting plate (6) is lower than the lower surface of the housing (1) where the lower air inlet (1102) is provided, thereby forming a lower air inlet gap (61) between the top surface of the lower position limiting plate (6) and the surface of the housing (1) where the lower air inlet (1102) is provided.

2. The vehicle-mounted headrest fan according to claim 1, wherein the housing (1) has a front end (115) and a rear end (116) that are provided opposite to each other, the air outlet (12) is provided at the front end (115), the height of the lower suction gap (61) gradually decreases from the rear end (116) toward the front end (115), the height of the lower suction gap (61) is in a range of 0.3 cm to 2 cm, and a top surface of the lower position limiting plate (6) is provided with a plurality of protruding second stop ribs (62), and the plurality of second stop ribs (62) are arranged on a side of the lower position limiting plate (6) that is close to the rear end (116).

9. The air outlet (12) is provided with movable blades (4) that can swing up and down, the movable blades (4) are used to adjust the direction of the airflow, and the swing angle range of the movable blades (4) is 20°. The fan assembly (2) includes a centrifugal fan (21), the centrifugal fan (21) is arranged toward the air outlet (12), and the diameter of the centrifugal fan (21) ranges from 5 cm to 10 cm. An attachment cover (92) is provided inside the housing 1, and a rotation shaft (921) is provided in the attachment cover (92). The telescopic data cable module (9) further includes a cable reel (93), the cable reel (93) is rotatably fitted on the rotation shaft (921), the telescopic data cable (91) is wound around the cable reel (93), and a return member (94) is further provided between the cable reel (93) and the mounting cover (92), and the return member (94) rotates the cable reel (93) in the reverse direction after the telescopic data cable (91) is pulled out. The housing (1) is used for rotating and recovering the telescopic data cable (91) to the cable reel (93), and the housing (1) has an upper end (113) and a lower end (114) provided opposite to each other, the upper end (113) has a first relief protrusion (18) that protrudes outward and corresponds to the mounting cover (92), the first relief protrusion (18) has a first relief space (181), and the lower end (114) has a second relief protrusion (19) that protrudes outward and corresponds to the mounting cover (92), and the second relief protrusion 2. The vehicle headrest fan according to claim 1, wherein the base (19) has a second relief space (191), the first relief space (181) and the second relief space (191) are mutually surrounded to form a relief cavity (95), the mounting cover (92) is provided in the relief cavity (95), the outer wall of the housing (1) is further formed with a storage groove (171) communicating with the first through hole (17), and the data cable connector (911) can be stored and locked in the storage groove (171).

10. The housing (1) includes a left end (111) and a right end (112) that are provided opposite to each other, and the housing (1) further includes a first fastening portion (110) located at the left end (111) and a second fastening portion (120) located at the right end (112), and the first fastening portion (110) and the second fastening portion (120) are both installed at one end close to the air outlet (12), and when the fixing portion (3) is connected to a headrest rod (20) of the vehicle seat, the first fastening portion (110) is fixed to the headrest rod (20) of the vehicle seat. 10) and the second fastening portion (120) are in close contact with a front end of a headrest rod (20) of the vehicle seat, the vehicle headrest fan further includes a switch button (81), the switch button (81) is electrically connected to the power supply module (7) and the control module (8), and the switch button (81) is provided on an outer wall of the first fastening portion (110) or an outer wall of the second fastening portion (120).

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